Distressed

Hi everyone...I just joined this site and it seems like ppl really have some good advice and I really love giving it myself. But for once, I'm the one looking for some answers.

I'm 19 yrs old and I've been in a serious relationship with my bf for aver a year now. He treats me better than anyone ever has and I know that he truly loves me and has done everything for me but I just don't know if I feel it anymore. I care about him a lot and we've shared so much together that I consider him my ultimate best friend, not just a partner. I keep trying to talk to him about how I feel but I'm really not good at that kind of thing. He's the type to really freak out. I'm really at a loss and because we spend everyday with each other, I've lost touch with my friends and have no one to really talk to about this. Not even him. It's such a lonely feeling.

I'd really appreciate it if there is any advice from anyone or even just a few words of reassurance.

Thanks